论文标题
连续各向异性损害作为离散双维骨折的双重建模
Continuous anisotropic damage as a twin modelling of discrete bi-dimensional fracture
论文作者
论文摘要
在此贡献中，研究了使用离散模拟来制定各向异性损伤模型。建议使用梁粒模型执行数值表征测试。确实，该离散模型通过允许位移不连续性并捕获裂纹引起的各向异性来显式描述裂纹。通过2D离散模拟，可以获得有效弹性张量的各种负载测试的演变，直至故障。然后，通过双维谐波分解对这些张量进行分析以估计张力损伤的演变。作为当前工作的副产品，我们获得了与双维弹性的距离距离对称性类别的上限。
In this contribution, the use of discrete simulations to formulate an anisotropic damage model is investigated. It is proposed to use a beam-particle model to perform numerical characterization tests. Indeed, this discrete model explicitly describes cracking by allowing displacement discontinuities and thus capture crack induced anisotropy. Through 2D discrete simulations, the evolution of the effective elasticity tensor for various loading tests, up to failure, is obtained. The analysis of these tensors through bi-dimensional harmonic decomposition is then performed to estimate the tensorial damage evolution. As a by-product of present work we obtain an upper bound of the distance to the orthotropic symmetry class of bi-dimensional elasticity.
